George j



G. J.- BENTLEY.

Heating Drum. No. 102,210. Patented April 26,1870.

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GEORGE J .BENTLEY, OF MICHIGAN CITY, INDIANA, ASSIGNOR TO HIMSELF AND EDWARD HIGHFIELD, OF SAME PLACE.

Letters Patent No. 102,210, dated April 26, 1870.

HOT-AIR DRUM FOR COAL-STOV ES.

"1he Schedule referred to in these Letters Patent and making part0! the same.

To all whom it may concern heating purposes, and especially upper rooms, in an economical manner.

The invention consists in an arrangement of inte rior and exterior air-heating chambers, passages, and

conductors, together with the stove, all as hereinafter more fully specified.

Figure 1 represents a longitudinal sectional elevation of a heating-stove provided with my improvements.

Figure 2 represents an end elevation of the same, partly in section.

Similar lettels of reference indicate corresponding parts.

A represents a wood-burning stove, which I propose to make open at the top B, and to connect thereto an elevated radiating case, 0, and within this case I propose to arrange an interior air-heating case, D, filling the case (3, except the spaces E, for the free passage of the products of combustion, to facilitate the draught and radiation of heat through the walls of both the cases 0 and D.

13 represents cold-air passages through the shells of both cases, to permit a tree circulation of air into the case D, for taking up the heat there and carrying it ofl through the discharge-pipe G.

In this way the heat is more rapidly taken up and utilized than when radiated through an exterior case only.

I inclose the whole in a zinc case, H, opening at the front, for access to the door I for supplying the fuel, and having cold-air passages K, coincident with the passages F, and a pipe, L, leading from the top to the rooms above, where the heat is to be discharged.

The smoke and carbonic acid gas are carried off through the pipe Min the usual way.

Having thus described my invention,

What I claim as new, and desire to secure by Let-.

ters Patent, is-

The rectangular air-heating case D, stove A O, and outer case H, provided with the cold-air pipes K, connecting with the pipes F of the inner case, when all constructed, combined, and arranged as herein shown and described, .for the purpose specified.

The above specification of my invention signed by me this 1st day of April, 1869.

GEORGE J. BENTLEY.

Witnesses:

GEORGE PAXTON, SIMON BITTER.- 

